The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2015
Filed:
Dec. 30, 2011
Matthew Edward Leustek, Metamora, IL (US);
Justin Werner Mcmenamy, Chillicothe, IL (US);
Jeffrey S. Morris, Bartonville, IL (US);
Matthew John Liening, Washington, IL (US);
Joseph John Stabnik, Rensselaer, IN (US);
William Lyle Schell, Morton, IL (US);
Matthew Edward Leustek, Metamora, IL (US);
Justin Werner McMenamy, Chillicothe, IL (US);
Jeffrey S. Morris, Bartonville, IL (US);
Matthew John Liening, Washington, IL (US);
Joseph John Stabnik, Rensselaer, IN (US);
William Lyle Schell, Morton, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A disclosed method of operating an engine may include discharging exhaust gas from at least one combustion chamber of the engine. The method may also include recirculating at least a portion of the exhaust gas to the at least one combustion chamber through an EGR system, including directing at least a portion of the exhaust gas through an EGR duct. Additionally, the method may include sensing pressure in a portion of the EGR duct by directing the pressure to a first pressure sensor via a first sensor passage having a first end connected to a portion of the EGR duct and a second end connected to the first pressure sensor, while maintaining a temperature of gas in the first sensor passage adjacent the second end at a bulk temperature of at least about 75 percent of a bulk temperature of gas in the first sensor passage at the first end.